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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 16 - Wave Motion and Waves on a String > A beam of unpolarised light is passed first through tourmaline crystal A and then through another tourmaline crystal B oriented so that its principal plane is parallel to that of A. The intensity of the emergent light is I. If A now rotated by 45∘ in a plane perpendicular to the direction of the incident ray, the intensity of the emergent light will be

A beam of unpolarised light is passed first through tourmaline crystal A and then through another tourmaline crystal B oriented so that its principal plane is parallel to that of A. The intensity of the emergent light is I. If A now rotated by 45∘ in a plane perpendicular to the direction of the incident ray, the intensity of the emergent light will be

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